Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc185c4a3722fc746af7b629160d4e4da637341806a2b5db6f5a0da097f68584' 
  AND token = 'uv5+GGv5Brs7G1evt8iyKg9pNfFNrfPlkb4fmLy3q3o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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