Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee96b7f6c28ee841a48af60bf96b0cd4011a662d8488a48e99a3dd0ba9829111' 
  AND token = 'OPhJn5Itkkvns7x0wFS4jYbippTIQvPD/Zy/iWh0jCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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