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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b01fc3cb428fc47adbc4b6fa4e4731f3a7e984aa0b03117ea1a12fe3ca8a821b' 
  AND token = 'N0njRprWyRFc+c0aB+k8O95XT7bs5YvX5FYaMb5AzBE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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