SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5a53297160735a1715c87c428451d0a527897dc4f37d2eae6839535a01bc5156' 
  AND token = 'bjBWOyGLWs8aa/Hphr450YDkqvVzTZ7C/VG8Upo0YPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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