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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '563d870c58418722de07e40cd9b37b9a59d06b5ece44d3adf372b05df9dec746' 
  AND token = 'SaNbn3vZ+nC8eDiZbCCtdaFBETK3k2ePo7ypLDP40hg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}