Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '398645a3897af4b4e36a12337861ccd9a01072f28ab1bdd872c05d31151ebafa' 
  AND token = 'wJyv4a1GTtSFq0quLnTKoV9en47qBe8CVHRQDsRfLsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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