Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbcdc6da2d603154ec2d3a422a2ba72fce98bc8a112807e3b36394b83dbe7524' 
  AND token = 'pVJWQv5m4CHDXAuynfNNCORZphA67Um6shvgzY5nnAI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}