SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e69382385ccc9b1a66105a77ebc7207c548b0f97f4011d8b0e10f04a390ab5d3' 
  AND token = 'BxG2q9UDTZBT/pNAipgSlVP7PDwb4SYv0VSq7uV3BGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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