Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ea0e86e0425bdc60ad9c6902b095d759048796bf745df0d13980c8182342bc1' 
  AND token = 'GPpIT9Hk5/8owGEt58QQlSrZ1d6+etgaboNAVrUx7B0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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