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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '82b5fb3923ba64a725ae997c7bf1099e4343266a7b5453fadee53b3f470571df' 
  AND token = '+0uUA/tEJU9VpAsSMUhRJAfX/h60OiyxVSlHxnF6kAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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