Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97611621c6d80761ad6533f3d9c8ce4da06f854b8ab6dc52fcd73f91df58dc9a' 
  AND token = '+O0o13QlwwMPksCtC1O6X8mfN6C9JQEgy8jZvV8gens=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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