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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2dcd64b31cb1c22ac13238cd71232ed36bd024dfd7bc96481f6ca817a4d4e36b' 
  AND token = 'b1dqZxLR7Kyja0kCv91DFfbEsNRoZPjSGZKR4h+W690=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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