Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c07fb8d72c5088a4ae0d1816e263c1410b57f3f157cf3a596f31c76a4343a7ec' 
  AND token = '6C9W91EWIa/MMOMlHzhA+jUn2tFBXk1KNVLUnYGanQo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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