Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6ef9c2ddae69d1d71f7af963434187e525b2eac97dbd8e7976ad19925a230c98' 
  AND token = 'ZPdMW81ZAgbouJJkmA1n3PBEKBXStYM9s+mPgWnK47c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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