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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1462a40a07718538895bdbe9c868219785cdcd6200456b064b84fbcfd7f1663b' 
  AND token = 'e2lj96R0SFxPvDjlEAg2i4A4YD5WDNYjRz4bK0p4mTA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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