Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f0b7c6d239a4f8489c22897135374f31c03a50554cb2859ef72caaa3c877070f' 
  AND token = '+upygwDvM76yR09MaM8zh89q1cbO5/5Nw3QCZ10v7tQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00126

JSON explain

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