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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f59ea371cbcae1875a7401a603a516648a5faa24a89d499213a16e8cd2a8d102' 
  AND token = 'Eh6wD9S6RdR4EwJCYTalkjmuaAK1IjwWN58iLUrwnEk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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