Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9ff0d75b244417067c24a2240446866e9b90571f68f507afd02ec3d3e9f8de4' 
  AND token = '7gcZvDQz26OtLVBPJNg+SU2Ad9brgy+g6wJPyHF3pHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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