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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62e05ae737b0b83f294b038c31f7a18cc1a32cfba47429b5442d6266254e1c03' 
  AND token = 'lCBuTpY4X5dGUPa54VOb7DPPk5qKxmqp5sjnAtSBUdM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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