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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0eee4978a17ceb0ac4de62e2c1f05b4dfe554a5e53300786ae80b11d60b29531' 
  AND token = 'LK57eDInPe3uY9gjU3QthVtvUzve5/dYlx2J0ZOEGEQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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