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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecd5bb224a83404801dc44589fe2e76c76f864a2828e2cdafb37bb5457fd5c25' 
  AND token = 'DVXxGFJmI42qXN8nccaN4krm5TPsEq5H3jIsaGC/bzo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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