Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1c68878087335a30dfb6f99aeae7383927930251e36b76d6dfe059ac64e0fc0' 
  AND token = '3Uo54na4Ff93Co+jNL5kQSrBl0YtBOpoRDqBwrCF1Wo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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