SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f57227f600f393bdd119cf34fcb1e0dfa78259d5ecc8469f616d0107d4d15ee3' 
  AND token = 'mOhjYooUGBuyaA/9Z1jwpyZzwWaj4XyfVXZr7P8svfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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