Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e0f0a1c68341d269fd1fbe3b85e757e6c25dbc0b19d5c4fcee557e278204d922' 
  AND token = 'p0JTQIT6FJqTJ1y5R0zsjTHX98g7dYfjOSTD2aOBclU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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