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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc224d1712c55aec8c259269a17d6397e710b36447a3d1c6ba32191e7d7ad8a1' 
  AND token = '56PCroinlW6Co5By765aaFn5EN0N8gIrM71HAdhU/8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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