Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfb9299b74bd255cb02d7f4128991c4d03317fcd6220cb09544454003fc6cba1' 
  AND token = '+Gn+T+d9HdU7H8sXnM8dKymm+HS/PCfSsCniNX5pU8g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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