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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '99aa5883b5d7d13cb54883a1864ce1621fdfb4a311c4cd1edc9ca99623e7845a' 
  AND token = 'F/kY/pNOGGLOJDH8XP/Z1Ca8p7/BjgVJO8pX1NB5dxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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