Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9e461d50e0426e658346ea82143ce6acc62b9ed19c4ae1c61bf9db847a0d1cfb' 
  AND token = 'ey417eR2gHrpPAOD5Ak72SOOjgP/8/BYbzTsvth32Us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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