Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1cea01f46b8bc9f2ba5fc14a79cf7c1b9e2a4d486b3ee977dd90f2cb9bced92' 
  AND token = 'jaAnonfUJE9/tljLIla3KPDTP6fsWiZCPJH5XcBmPs8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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