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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dcfdc126e93ec6b51f417f1d09b5e642c0bdd1e06f6a7bdca44e87dd23db91a8' 
  AND token = 'EGGcKDq0+AkJP5buW/9S1oG64UIceGNYENYRcXSgmMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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