Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c648deac24d8b87e2929e0805e1fe9970f78361afb11e83828548aaed8d12644' 
  AND token = 'AbinNYxIElL1tG3Or0jnX5taM6Kw87kQRJYlLcgXkAg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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