Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2d02c315ede1d2b4b1a154438437e9a5f1f8db4a282cb5ea8120551c428e55b' 
  AND token = '695uhjZbCRdzE5KFxnUc6E13IcEssJaa+EagMJT9Aoo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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