Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '79123d1931d364c44879f4c0d83eecacc9aad1cc0162e031cddc15106879ca9c' 
  AND token = 'C0+yQcoQ5uvjo8/9T2IBcHecFIdJH3VAPFRbbOkhAfI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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