Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '24062d4378c38772233fd889efdf6dbdc0a75ba163019e2251845c78d4535317' 
  AND token = 'MRr1btVp5WYrd1f28AUQ/sGCCj2UPpTZAJNCHLYNTyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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