Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86a24894a9491f9deb6ac790d89b0c6ee1b11297b8411f294a7d4a1ec843ce2b' 
  AND token = 'YXBj4kbdvNhOO+omew4GwxPig4KD1Cv4gKL6kGspxC8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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