Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b37d24bd8341c2915db63fcb79f5ee7927b3827d37d7b57363b60c365ce7f1c2' 
  AND token = '39w3QrHU2qL2QOIv9CMkwrV0jOaL9tDX/lz2ZnrvUus=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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