Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7526b399be9cfbedecd3ad370038c188c7deea0b651c6c6ddc0f966258e6e84e' 
  AND token = 'wmMIs7ZWrBHNnSM7eNBcU3gOIWpUC6KpUxaT7FmMtc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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