Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '58c67c342b8e5596087504e259670c0608387205d7a5a7c5f2e5704d303e6c83' 
  AND token = '1ITsFhbKV29XoBYM5VB4Wp6hccJcPh5zNJcueI1bQiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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