Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1aaeff717a4d80fd66fddfc58c17735180ef5f6f79781077ccc241db16694ec9' 
  AND token = '0ObLRKvzF7VXfzSUn1i2zc7ONoYAVNFNkwEkq5Ri2m4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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