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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f14f01ccf1e6f6451ba6bcdf60781edbb1d5f700bec18eaa22e7de8bab1bd8bb' 
  AND token = 'H/05Q9WETW8wGVOpbDDJNLBXD4MW98WR8x41DVdzGLE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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