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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06d05f3ede89b93b0c49f707fdca873a532df1176d913b4719a1f4be47611a7c' 
  AND token = '9FJJbM0WcFjP4Z31WEGjOy0vdAhwF7Jyd5gSq60X//k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}