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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48fbb92bf2ac7c58e095afa926034611ef36b6f48ca67105ff3d0593113829b6' 
  AND token = 'qCA6h7XtPUCeBre5qwl/nL+9XLlAk7tEyvUX5CIVOIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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