Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c49a08c3501b12ee3d718ad3e44bcc67743c8fb64a3f47233c2edec3a4112f0' 
  AND token = 'fUQEdw3WF8qHyRzhlwfuX26KjJJUc1EiqUV6xKq+08M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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