Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '150f3522bc3e9064d24baf343761b302c1808fcc0b29a81da09ee6a11cf94857' 
  AND token = 'No7f59FdlrJshMVObF3abrVNqewFjbfQn45GPgMoJWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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