Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '92c107026b2a24ee05e4c47d7aa4b90a71326e5525eaf58845126179bf54c3e0' 
  AND token = 'ArH/r1mlLeXesHtw3fPYy/ziTaVutJkOQebqtohFZDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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