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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6dc26165f45f3a95a17c2de9d579e1f83c28201514a25e04f221ccbe5e4ae558' 
  AND token = 'YpQ+O0M/blsnFnn/sCiy025pp/lGsl9aw3ySzvAb8T4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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