Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c65a404e83fcecb782975d772035f211d389bf274b1bee7b55a81f0ab6231812' 
  AND token = 'TNqOtUjSwLa/H6qD6nuSMnhReh4TS6LmcNSrFyBaOtw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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