Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4a960a2ba93521cc7392dd8468bf867ce8d946a52c79801f6fef3011f625ff6' 
  AND token = 'Esphh65vbIqXsCY73tMgOtllBJD253BtoAJJstxipPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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