Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7371e3590385275b81ad19a512b9b8c377aba5229e69397e2ba5b20c1074036a' 
  AND token = 'ipJ/4SamDfaTHM0sb18SlKWmCHrvMBSLLtFJlhiwLag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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