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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '223975cf8d51f0b2125bc8722fa57fe522347fac8e656432bedd63e876f62d8d' 
  AND token = 'Tl4No+Ri2e4AQPjNVrRax+tTSB4vIy7UoQPuBCiLsNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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