Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9059b24d425b54765cdf5f21b1e63a445b73e6ec98e24050aada2533a1e2c262' 
  AND token = 'ZlHwEiQlCo6KDjQhKVDiaT56IWJgIj5Gxa+CT0a6SVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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