Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d2ae7d22e1aaf3b73a4a637cf71858720a180ad4acc7de01b24f4ab1c02cd69' 
  AND token = '1olSLwIp+G4bhgtSmafUrahC1up1+HyqCigseR58zSg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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