Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1661004097c90d01c3e01822727dc5c4927a9d128fe3de43903896f91961575' 
  AND token = 'aAbjmNuRHHT6dRhHbQ2zN/vo1ml76H3ORuQvN3Sv2J8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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