Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17fdb1e9a8128ea1b7935c17932cc711f3ea7d393c94cfc7fee7edd234bd87d5' 
  AND token = 'Hcmo/076vEzkrEvYRmcUadsMlAo3guS0ExdV0IjHmMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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