Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46ab96bcfd152405d288f6b354abd3f3a512743a5649370e8104369da2ef74ad' 
  AND token = 'wRIJA5Wgz9cfnKAFylH9041NRz5mfbAxoEkJ9P1+B88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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