Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ccba54be23806122c0855a86551f32fae2fd6b8317aa5d28b7ac3aed8ebd5f7' 
  AND token = 'euocychjJ6D0IUWvWEhBLDyAZZIQgzxES7Ro85GCKdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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