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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d6bbdcbfb18e5cc59ff03e5b8ea57a9c1c56163888b01da19c5f6fb701fa9ba' 
  AND token = 'RMz/6M7wU/dyeoIXeomq2zJxHs3Rum3ex5OgQluC+HY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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