Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c74e99b987f9e7aed19b1141969a7c7060224631a94261a2766e69e8f3641a2e' 
  AND token = 'RslUM1oY129UmrtJLMHNE0ClAvyjfc1EvZSWMOQb5GM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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