Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc733a44a4affd1df3fa81ad1d107894f159c863652b6c9a44fd72da89f2513' 
  AND token = '5mTTyR0CI6Zijjy3Yl+DUlctfaAt6cTi7MVjJWvQD5g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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