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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10632266713802e7139fc3bf1026dd1bcadefe4d7df0bb543191681ad06813ca' 
  AND token = 'puHl3dHYwDlyzGFd/qHgyMW44Z7mtTRjuQdr5ieAfIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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