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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '365e0d25d5778f727f5689c2a4c263b20ea6c15aec6335136f9f865d9e138551' 
  AND token = '0rlziRT0Ji0da2IcwzzJKz3isOUk7uu978A6bqFjK0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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