Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f606c0fb8a258217b69044fbbeaae01dc8f3dc18eed5996ded97edd016fd520e' 
  AND token = '02G/PChSuJe/Ip45+FScMyM7PkcWmtF4EOp6AgppSVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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